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Severity: 8192

Message: Return type of CI_Session_files_driver::open($save_path, $name) should either be compatible with SessionHandlerInterface::open(string $path, string $name): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 113

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::close() should either be compatible with SessionHandlerInterface::close(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 280

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::read($session_id) should either be compatible with SessionHandlerInterface::read(string $id): string|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 145

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::write($session_id, $session_data) should either be compatible with SessionHandlerInterface::write(string $id, string $data): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 223

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::destroy($session_id) should either be compatible with SessionHandlerInterface::destroy(string $id): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 303

A PHP Error was encountered

Severity: 8192

Message: Return type of CI_Session_files_driver::gc($maxlifetime) should either be compatible with SessionHandlerInterface::gc(int $max_lifetime): int|false, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice

Filename: drivers/Session_files_driver.php

Line Number: 344

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PHP

print_r() Fonksiyonu Kullanımı (Dizi Yazdırma)

2.9/5

0 yorum

Hakan Taşan tarih

18 Haziran 2015

print_r() fonksiyonu esasen PHP'nin diğer yazdırma fonksiyonları gibi (echo, print) değişkenleri yazdırmaya yarar. Ancak print_r() fonksiyonunu diğerlerinden ayıran özellik dizileri yazdırmasıdır. Yani echo ve print ile dizileri yazdıramayız ama print_r() ile diziyi ve bütün indislerini yazdırabiliriz. Çoğunlukla elle hata ayıklama yaparken programcılar tarafından kullanılır.

Syntax

print_r($dizi);

Örnek 1)

<?php
    $dizi = array("Mavi","Sarı","Yeşil");
    print_r($dizi);

    // Çıktı: Array ( [0] => Mavi [1] => Sarı [2] => Yeşil )
?>

Örnek 2)

<?php
    $dizi = array ('Kitap' => 'Küçük Prens', 'Dizi' => 'Nikita', 'Film' => array ('Testere', 'Matrix', 'Hobbit'));
    print_r ($dizi);

    /* Çıktı
    Array
    (
        [Kitap] => Küçük Prens
        [Dizi] => Nikita
        [Film] => Array
            (
                [0] => Testere
                [1] => Matrix
                [2] => Hobbit
            )
    ) */
?>